Embodiments of the invention can sample particulates, aerosols, vapors, and/or biological components of ambient air utilizing spherical air-sampling filters. Components of the embodiments may include a storage magazine for holding a plurality of spherical air-sampling filters, an air-sampling manifold configured to deliver an air-sampling filter from the storage magazine to a sampling location, and an air compressor to perform an air sampling operation and to transport a used air-sampling filter away from the sampling location. Operation of some embodiments may begin by rotating a slotted drum within the air-sampling manifold to deliver an air-sampling filter from the storage magazine to the sampling position. Operation may continue by using the air compressor to draw air from an ambient environment through the air-sampling filter. After sampling is complete, the air compressor may be utilized to pneumatically transport the used air-sampling filter away from the sampling position to a filter retrieval location via a transport tube. These operations can be pre-programmed locally or triggered by remote communication. Operation may continue uninterrupted due to a plurality of unused air-sampling filters retained in the storage manifold. Because operations can be triggered remotely and air samples are autonomously transported off site, embodiments of this invention eliminate unnecessary risks to human health created by other air-sampling devices, which require an operator to be present at a potentially hazardous sampling site to activate the device or retrieve air samples. Embodiments of the invention can be installed pre-emptively to eliminate risks to human health created when an operator must deliver a portable air-sampling device to a potentially contaminated sampling site. Furthermore, embodiments of the invention allow rapid retrieval of air samples following sample collection, which can expedite analysis and identification of aerosols and consequently help minimize human exposure to potentially dangerous and life-threatening chemical and biological contaminants.

A compartment wall structure defines a fuel filler compartment that includes a tube receiving opening and a vent opening. A fuel receiving end of a fuel filler tube is located at the tube receiving opening of the fuel filler compartment. A fuel tank attachment end thereof is located outside the fuel filler compartment and is spaced apart from the compartment wall structure. An air vent structure is in fluid communication with the vent opening. The air vent structure defines a chamber opening connected via a vent line to a fuel vapor filter canister. Vapor from the fuel filler compartment is vented to the fuel vapor filter canister through the chamber opening. The air vent structure has a screen at the chamber opening to prevent entry of objects, such as, for example, insects and/or debris through the chamber opening.

A system and method for removing contaminants from emissions including the use of a matrix for selecting application specific copper, zinc, tin, sulfide (CZTS) sorbent compounds. The CZTS sorbent compound is a reactive material that removes contaminates from gaseous and/or non-gaseous emissions. The CZTS sorbent compound becomes a broad-spectrum reactive material with enhanced properties when alloyed specifically with precise elements targeting specified contaminates present in application specific emissions. The matrix disclosed herein defines which enhancement element is best suited for application specific compounding. The method may include testing the contaminated emissions and then routing the emissions through one or more specific filters based on pairing contaminates with filters containing corresponding CZTS sorbent compounds.

The invention relates to a filter element (10), including a filter body (12) with a self-contained exterior side (50) which surrounds a self-contained interior side (52), at least one filter medium (16) being disposed between exterior side (50) and interior side (52) and the filter body (12) including at least in some areas at least one winding layer (14) with at least one adsorbent. The invention relates furthermore to a filter system (100) with a filter element (10) with a filter body (12) with a self-contained exterior side (50) which surrounds a self-contained interior side (52), at least one filter medium (16) being disposed between exterior side (50) and interior side (52), the filter body (12) including at least in some areas at least one winding layer (14) with at least one adsorbent.

The present disclosure generally relates to an air filtration system, an air filtration device, and an air filtration module for removing ultra-fine particles (UFPs), pathogens (e.g., viruses, bacteria, etc.), volatile organic compounds (VOCs), oxides or odors. The systems, devices, and filter modules of the disclosure perform at enhanced filter and power efficiencies. An air filtration system is provides that includes a docking base for receiving a removable, portable air filtration device in fluid communication with the docking base. In certain embodiments, the air filtration system further includes the removable, portable air filtration device. The portable air filtration device may optionally include an air filtration module.

Provided are an air permeable vent filter, and a headlight assembly comprising the same. The air permeable vent filter has a body in which a nanofiber web, which comprises a plurality of pores and is formed by accumulating a nanofiber electrospun from a spinning solution in which a polymer material and a solvent are mixed, is spirally wound, and the air permeable vent filter implements an air permeable filter function of allowing air to pass through from one lateral side of the body to the other lateral side and blocking liquids and solids.

A filter cartridge for a surgical gas delivery system is disclosed which includes a housing having a front end and a rear end and defining a first interior flow path extending downstream from a first inlet at the rear end of the housing to a first outlet at the front end of the housing, and a second interior flow path extending upstream from a second inlet at the front end the housing to a second outlet at the rear end of the housing, a first pleated filter element operatively associated with the first interior flow path, a second pleated filter element operatively associated with the second interior flow path, and a carbon filter disc operatively associated with the second interior flow path and positioned adjacent a downstream side of the second pleated filter element.

An air purifier includes a shell, a wind turbine and an air filter layer. The shell includes at least one air inlet and at least one air outlet, and an air passage is defined between the at least one air inlet and the at least one air outlet. The wind turbine is located in the air passage. The air filter layer is located in the air passage and includes a filter screen. The air filter screen includes a carbon nanotube structure including a plurality of carbon nanotube films stacked and crossed with each other. The carbon nanotube structure includes a plurality of micropores. A diameter of the micropores is ranged from about 1 micrometer to about 2.5 micrometers.

An air filter for a fuel cell vehicle may include a first filtration layer formed in a two-layered dust holding structure, a gas adsorption layer formed of amorphous activated carbon, a second filtration layer having amorphous pores formed therein, and a cover layer for maintaining a physical form of the air filter.

A method for air purification is disclosed, comprising directing air through a particle removal filter that acts to filter the air for particle phase pollutants to thereby produce particulate filtered air; and directing an amount of the particulate filtered air through a gas removal filter that acts to filter the particulate filtered air for gas phase pollutants to thereby produce gas filtered air; the particle removal filter with the first blower and the gas removal filter with the second blower are housed in different enclosures and they are allowed to operate in a way that; the two different units are selectable to operate separately without connection in a first mode, and to operate together connectively in a second mode; when the two different units are selected to operate together connectively in the second mode, the amount of particulate filtered air directed through the gas removal filter is based on a concentration of particle phase pollutants in the air.